Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/46627a4: Update to 3.35.4, ghost-cli 1.14.1
- https://github.com/docker-library/ghost/commit/c3f8449: Merge pull request https://github.com/docker-library/ghost/pull/235 from tyler-nguyen/updating-alpine
- https://github.com/docker-library/ghost/commit/e1e78aa: updated alpine to v3.12

library/ghost

@@ -4,14 +4,14 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/ghost.git
 
-Tags: 3.35.3, 3.35, 3, latest
+Tags: 3.35.4, 3.35, 3, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: 40221b93586f79294666378374fedcc0bfff9f89
+GitCommit: 46627a4387ce51eff6634366095d9bc5d0e22b12
 Directory: 3/debian
 
-Tags: 3.35.3-alpine, 3.35-alpine, 3-alpine, alpine
+Tags: 3.35.4-alpine, 3.35-alpine, 3-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 40221b93586f79294666378374fedcc0bfff9f89
+GitCommit: 46627a4387ce51eff6634366095d9bc5d0e22b12
 Directory: 3/alpine
 
 Tags: 2.38.2, 2.38, 2